Sewing-machine



(No Model.) zusheenfsshee't' 1.

IL-E. -ANGELL l SEWING MACHINE.

No. 378,075. Patented Feb. 2111888.

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' 1 jlU"Nrrn1i STATES #PATENT @Fri-ical f EDWIN a. ANGELI., oF BOSTON, AMASSACHUSETTS, AssienoaTonneYv vj ADDAXYBASTING MACHINE COMPANY, .OF PORTLAND, MAINE. v'

SEWING-MACHINE.

t SPECIFICATION forming part of Letters Patent No. 378,075, dated February 21, 188.8,` v v.

' 4 Application filed June 18, 1886. Serial No. 205,520; (No model.)

T0 @ZZ whom it mag/"concern:

Be a known that I, EDWIN ANGELL, df

Boston, county of Suffolk, and State of Massachusetts, have invented an lmprovement'in Sewing-Machines, of which the following den scription, in Connection with the accompany ing drawings,.is a specification, like letters on the drawings representing like parts. Y

This invention has for its object the production of av sewing-machine more especially adapted for basting clothing, for which work.

`Herein I haveshown the presser-foot as adapted to rise and fall as aliftiug presser-foot, and

also, when desired, tomove backward and forward with relation to the cloth-plate of the machine, it moving backward with the feeddog and` forward over the material after the completion of its feed-stroke, the lfoot thus having four motions.

, Th'e particular .features in 'which myfinven-y tion consists will be hereinafter described, and Specifically pointed out inthe claims. n

Figure 1 is a front side elevation of a sewing-machine embodying my invention, a part` of the frame-work being broken out, otherA parts being in section, to better show the working parts, the presser-foot being shown in elevated position; Fig. la, a detail of the link bl.

Fig. 2 is a rear side elevation of the machine, l

Fig.

the beltfreceiving wheel being omitted.

' 3 is a front or left-hand elevation thereof, the

rotating hook employed to cooperate with the needle being omitted. Fig. It is a detail showing in perspective .the feed-carrier. Fig. 5 is f a rear side elevation of the feed-regnlating le-A ver and its attached cam to effect the change of tension; Fig. 6, a top view of the feed-bar detached; Fig. 7, a detailshowing one of the levers separated from the mach-ine, and Fig. 8

. is a separate view of the lever andthe shank ofthe dog to lift the .presser-bar.`

Referringto the drawings, A reprcsentsthe bed-plate, and A the overhanging arm, Vall of usual shape, the'forwardl end of the said'armbeing forked and provided with suitable bear; i ings forythe needle-bara., the shank b of the* presserbar, and a guide-rod, t. The needlebar-has attached to it'an eye-pointed needle, a'.

lThe main rotating kshaft A2, supportedin `nsual'bearingsiin the overhanging arm,is pre1y vided at its rear end with a balance or belt,

wheel, A5, the'hub'of which is sco'red'forfthe yreception of the usual 'driving belt or band,SA4,

the said shaftalso carrying` the fly-wheel and a cam-disk, B, grooved at its face, as atb. (See dottedlines, Fig. 2.) This groove bJreceives 'in it the shoe b2, pivoted loosely. upon a stud, b3, connected to the upper end of the lever b, (see Fig. 7,) having its fnlcrum at b5, (seeFig. 2,) the lower end of the said lever below the said fnlcrum beingk grooved (see,

also, Fig.`7) for the reception of a block, bl", i

connected loosely with a pin, 3, carried by the lowerend of the link b7joilnted atjb3 tothe outer end of the'stitchregulating lever C, plv"-` .oted at C', the handleof the Said lever being within easy reach of the right hand ofthe operator. The pin 3 has at its other end a'loose block, 4, which enters a'groove in an arm, C2,

the lower end of which is'attached by ascrew, i

6, to the rocklshaft G3, having its bearings in lugs or ears at'thennder side of thev bed-plate,

the said rock-shaft at its forward ,endhav'ing secured to it the arm 0*, which, by ali'nk,.G Y

is -attached to the dependingleg C?, yrigidly attached to the rear 'end of the feeddog 06,',

(shown separately in Fig. 6,) the said rock# shaftand link effecting-the forward andbackward movement of the feed-dogand conse. lquently governing the length of`V they stitch,rl v y the stitch being made `longer, orfshorter byvv turning theI lever ,0, nponfits lfulcrum, the movement of the lever in the direction ofthe The hole in the lower end of thelinkfb, v(sce Fig. 1%) for the reception of the pin`3,.isof

enough greater diameter than thesaid'cpintoV lprevent the 'movement of the lever C while arrow thereon, Fig. 12, shortening the feed.4 A

TQQ l In Fig. 2 the machine is set for its longest stitch. The vblock 4 (see Fig. 1) is entered by the shank of a thumb-screw, 10, inserted through a slot of the arm C2, and also through a leather or other friction plateor device, 12, the said screw by its action upon the washer producing sufficient friction to keep the lever C and the parts for varying the length of the feed in the position in which they have been adjusted by the operator.

`The main shaft has attached to it an eccentric, c, which is surrounded by the upper end ofa link, c, slotted at its central portion to embrace a block, D, mounted loosely upon a stud,.D2, of the frame-work, the lower end of the said link c2 having a screw, D3, which enters a sliding block or pin, D4, placed in a radial slot in a disk, D5, secured to the hookshaft D, supported in suitable bearings, DlD, at the lower side of the framework. The said hook-shaftatits forward end will have a hook substantially the same in construction and operation as the hook used in the VVillcoX 8v Gibbs sewing-machine, the said shaft at the rear of the said hook being provided with a cam or eccentric, d, which is employed to raise and lower the feed-bar at the proper times to engage and release the cloth.

The bearing DEl has a hanger, D9, (see Fig. 1,) the front face of which is planed or made smooth to receive againstit the foot e of the feed-bar carrier E, (shown separately in Fig. 4,) the open slot e in the said feed-bar carrier being enteredA by a block, e2, which is connected to the hanger D9 by screws 13, the said screws being first inserted through holes in a plate, ,which, being of greater size than the block e2, acts against the foot e of the feed-bar carrier, making an outer guide for it.

The hanger D has attached to its under side, by screws 144, a plate f, provided with two holes for thereception loosely of two studs, 14, which, as herein shown, are screwed into the lower end of the foot e, the said studs below the platef and between the said `plate and theirheads receiving upon them spiral springs f', thev said springs acting normally to keep the cross-bar e of the feed-dog carrier E in contact with 'the eccentric d', attached to the hook-shaft, the said feed dog carrier being raised vertically by the said eccentric just before or as the toothed surface of the feed-bar C is to rise through the slotted plate 17, to engage and feed the material for a stitch. The feed'bar carrier E has a back wardly-extended arm, e5, having a guide, e, the main part of the said carrier having two other guides, e7 es, which receive and guide the feed-bar in its reciprocatious.

IuFig. 4 the guide eE5 is omitted from the feed-bar carrier, in order to better show the cross-bar e4 and the slot in which works the eccentric d', attached to the hook-shaft, the said eccentric operating to raise the carrier and feed-bar.

The shaft A2 at its forward end has attached to it the disk G, and just back ofit a cam, G,

the upper bearing, A5, through which moves the presser-shank b, the said spring normally acting to keep the lower side of the said plate against a hook, 26, attached by screws 27 to the head of the machine, that end of the plate Ga surrounding the guide-rod t resting normally against the pin 22 therein. The presserbar b below the lifting-plate G3 is surrounded loosely by a block, b, the said block having connected to it, by a screw, 28, the link 29, which is extended upwardly above the head of the machine, where it has attached to it, by

screw 30, a cam-lever, 31, which may, if desired, be turned to act upon the bearing AE of the machine and lift the said block, and with it the plate G3, so that the arm G2 thereof will not be struck by the cam G in its rotation. When the plate G3 is left under the control of the spring 24 and permitted to rest on the hook 26 and pin 22, then during' each rotation of the shaft A2 the cam G thereon will act upon the arm Gz of and lift one end of the said plate, while its other end is held down by the spring 24, sov that the edges of the hole 18 in the said plate will bite the presser-bar shank b, and thereafter during the remainder of the time that the said plate is being acted upon bythe cam G the presser-bar will be lifted, and with it its attached devices; but as the said cam passes out from under the said plate the spring 24 throws it down against the said hook 16 and pin 22, leaving the plate G in condition to be again elevated to act as a dog to lift the presser-bar.

The presser-foot g is herein shown as attached by a screw, g', to the lower end of a foot-carrying lever, g2, pivoted by a screw, 33, to the presser-foot shank b, the said lever gI havinga slot, g3, to receive a screw, g, whichr is screwed into a block, g5, attached by a suitable screw to the lower end of the presser-bar shank b, the said shank being surrounded above the said block by a spiral spring, g, which normally acts to keep the said foot down upon the work.

The screw g* may be turned in so tight as to prevent the movement of the lever g* upon its fulcrum. The screw 33, or, if the said lever is left loose, the' foot g, will be free to lmore backward with the material as it is acted upon at its lower side by the teeth 16 of the feedbar C, the said lever being preferably left free, so that the foot may be moved backward with the material when a very long stitch is being made, the presser-foot at such times being lifted as soon as the material has been moved far enough for a stitch, so that when elevated IOC IIS

"swf

nut 44 may be tnrnedupon the rod, to elevate with the presser-bar b and acting upon a pin, 36, of the said lever g2, throws the same forward or toward the operator preparatory to the descent of the foot upon the material and the rising of 4the feed-bar C6' to grasp the inaterial and move it in the formation of a new f head of themachin'e by the sc'rewsts, the said Itwill be observed that the presser-foot bar is free to descend upon the material, whatever maybe its thickness,'and is always lifted from the surface of t-he material sufticientlytopermit the cloth to be released from the presserfoot. The presser-foot is raised while the feedbar is moving backward and the needle is rising.

I wish it to be expressly understood that in some instancesv and for someclasses of work I shall omit the plate G3, or so elevate and hold it elevated that the cam G- in its rotation/cannot strike the arm Gr2 of the plate to move it to bite the shank b and lift it.`

The hub of the lever C has acam, 37, (shown in Fig. 5,) against which rests the foot 38,r attachedto the vertical rod 39, eiztended through the lugs 40 41, the said foot being normally held down against the said cam by means of a spring, 42. The upper end of this rod has secured loosely uponl it a tension regulating block, 43, which is made vertically adjustable thereon by means of a thumb-nut, 44, which engages a screw-thread atv the upper end of the said rod;

The rotation ofthe rod 39 is prevented by' the spline s,`which enters a slot in the lug 4l. (See Fig. l.) The tension-regulating lever H is pivoted upon a block in a stand, H', erected upon t-he overhanging arm. 'The frontend of this lever has pivoted upon it a clampingplate, 7L, which bears upon the thread passing from a suitable spoolbetween it and the plate or rest 71.'. l

The rear end ofthe tension-regulating lever is extended backward over and attached to the block 43 by a screw, h, so that the saidlever is compelled to follow the block 43-and rod 39 as theyv are moved by or through the feed-regulating lever C; When the outer end ofthe' lever C iselevatedtol make the longer stitch, the cam 37 presents tothe foot its smallest radius, permitting the. rod and block to descend and reduce the tension of the lever Hon the thread to the minimum, the depression of the said lever in the direction of they arrow, Fig. 2, to shorten the stitch, causing the cam 37, acting upon the foot, to gradually raise the rod and-increase the tension upon the material. y,

To secure the proper maximum and minimum tension for different classes of goods, the

or depress the block 43, as the case maybe.

rIhe disk G at its'front side has a suitable crank-pin, which enters a slide-piece, herein shown as a short rod, which enters a hole in the cross-head m, attached by screw m/{see `(lle-barin usual manner. 1

Vtiallyas described.

-vand rock-shaft to move it variable substantially as described. Y

Fig. 3)l`to the needles-bara;the rotationofthe' disk G effecting'therreciprocation of y'the Yneen y-The'presser-bar shankb has'connected to it,"

by a screw, t2, a block, t',r which has twoholes or openings, one of which serves for the pas- 4 sage/of theneedle-bar, while the other receives in it the guide-rod t, Ywhich is fastened to the block, in connection with the guide-bar t, in# suring accuracy of. movement of the presser-- bar b. f

In ,the machine herein shown thepartcooperating with theneedle a and its' thread to form astitcli has been omitted'.

V'Ihe'hook cut from-the outer end of the .shaft ywas just like that common to the Willcox'fv Gibbs sewing-machine; but II desire it to b e.y understood that 4my improved feeding mechanism might be used equally well with ama- 2. The vibrating lever b, grooved 'at'v its-- lower end, the rock-shaft having thegrooved, arm C2, andthe block4 therein, andpin to carry' the block, combined 4with the lever C .chine wherein the stitch is composedof two operate substantially as defcc and link b7,having a'slot embracing the said,

pin to enable the lever-Wand arm C2 to be vi-A 1,05

brated without moving-.the lever G, substan- 3. The presser-bar, the lifting-plate G3,fsurwith an arm, G2, and thecam'to act upon the said arm, combined with the stop 26fandthe- ,IgI O springf2`4,to operate'substantiallyas described.

4. The presser-bar b, the block b, surroundthe arm G2, the rcam to move it, and the spring saidplate, substantially as described.y

5. The combination, with thefpresserfbar," l.

of the lever'g2, pivoted at or nearits .upper end'to saidbar, and having the slot ya andthe pivoted foot4 g, thefscrew ggand a"retracting spring for said lever, substantially as setforth.

6. The feed-bar(carrierv having a series of guides for the`reception of the feed-'bary and" Y an opening, e', the block e", fitted into the said opening, the plate e3, means to attach the said block and p late, and-v means,'substantially as described, Yto raise and lower the said feed-bar, combined with the `feed-bar Gt and a crankdistances,

7. The feedingmechanism'and the feed-regulating lever Vprovided with a'canl,l Combined with the tension device, "the tension-,regulatrounding the presser-bar loosely and provided,r v I ing Jever-spring H, and the rod 39, the lower end of which impinges against said earn and the upper end of which is connected with the said lever-spring, substantially as set forth.

5 8.. rlhe combination, with the thread-rest h',

of the tension-regulating lever H, the clamping-plate h atn the forward end of said lever, the block H', to which the said lever is pivoted between its ends, andan adjustable abutment,

lo as block 43, to act on the rear end of said lever to vary the pressure of the clamping-plate on the thread, substantially as set forth.

In testimony whereof I have slgned my name to this specification in the presence of two sub scribing witnesses.

EDWIN E. ANGELL.

Vitnesses:

GEO. W. GREGORY, C. M. GONE. 

